Heat Addition Module - Relay Module + 4 way valve

Heat Addition Module - Relay Module + 4 way valve

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*This kit is to be purchased at the time of kit purchase*

If your require an upgrade to a existing system please email us sales@undermountAC.com

*The general appearance of this product may change but the core functionality will be the same, we are still experimenting with how to package this specific version*


  • Heat functionality enabled on our NextGen thermostat with 3m control wiring to the Heat module.
  • 4 way Electric valve with pre-cut hose to connect to HVAC evaporator
  • Standoff plate to level electric valve
  • 4 way valve connector and pins
  • 4 relay enabled control module to add your own accessories.

Please see video below explaining functionality: